102200400444 has 48 divisors (see below), whose sum is σ = 240728382720. Its totient is φ = 33745113600.

The previous prime is 102200400397. The next prime is 102200400509. The reversal of 102200400444 is 444004002201.

It is a self number, because there is not a number n which added to its sum of digits gives 102200400444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 559747 + ... + 719525.

It is an arithmetic number, because the mean of its divisors is an integer number (5015174640).

Almost surely, 2^102200400444 is an apocalyptic number.

It is an amenable number.

102200400444 is an abundant number, since it is smaller than the sum of its proper divisors (138527982276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102200400444 is a wasteful number, since it uses less digits than its factorization.

102200400444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160290 (or 160288 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 102200400444 its reverse (444004002201), we get a palindrome (546204402645).

The spelling of 102200400444 in words is "one hundred two billion, two hundred million, four hundred thousand, four hundred forty-four".